400 and 900 are squares of 20 and 30, respectively.
The [perfect] square of 900 is 810000
900 can be factorized as 30*30. As both these factors are same so we call 900 to be a perfect square.
Yes.
John likes numbers that are perfect squares. 400 is 20 squared, 100 is 10 squared, and 3600 is 60 squared. He doesn't like 300, 99, or 3700 because they are not perfect squares. So, there you have it, John has a thing for those perfect squares!
It is 2 because 1800/2 = 900 which is a perfect square because 302 = 900
300*3 = 900 which is a perfect square because 30 squared equals 900
How about 150*6 = 900 which is a perfect square because 30*30 = 900
30 x 30 = 900
"2400 Denier Polyester and 900 DenierMicro-Polyester fabric"
900
1900
400 of 900 is about 44.44%.